and do that while maintaining the integrity of the system. Not people tinkering with an existing variable that has known tradeoffs if you set it lower or higher.
Because 1MB was not arrived at arbitrarily, but through exhaustive research and testing?
You're not saying that
1MB is simply a meaningless number Satoshi randomly selected because it was always meant to be increased long before it was reached, are you? Because that couldn't be the truth of the situation according to what blockstream says.
Satoshi selected a much bigger number originally (was it 32MB?). It was changed
to 1MB for reasons already in the past and not in effect at the current moment.